wehub-resource-sync
82 lines
2.7 KiB
C++
82 lines
2.7 KiB
C++
/*
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* ******************************************************************************
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* *
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* *
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* * This program and the accompanying materials are made available under the
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* * terms of the Apache License, Version 2.0 which is available at
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* * https://www.apache.org/licenses/LICENSE-2.0.
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* *
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* * See the NOTICE file distributed with this work for additional
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* * information regarding copyright ownership.
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* * Unless required by applicable law or agreed to in writing, software
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* * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* * License for the specific language governing permissions and limitations
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* * under the License.
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* *
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* * SPDX-License-Identifier: Apache-2.0
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* *****************************************************************************
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*/
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#include <helpers/ShapeBufferPlatformHelper.h>
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#include <helpers/cpu/CpuShapeBufferCreator.h>
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#include <mutex>
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// Include platform-specific headers conditionally
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#if defined(SD_CUDA)
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#include <helpers/cuda/CudaShapeBufferCreator.h>
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#include <cuda.h>
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#include <cuda_runtime.h>
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#endif
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// Forward declare Environment class if it's used for platform detection
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namespace sd {
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// This ensures ShapeBufferPlatformHelper is initialized BEFORE DirectShapeTrie or any other
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// code tries to use it. The dummy struct with static member forces initialization at program startup.
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struct ShapeBufferInitializer {
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ShapeBufferInitializer() {
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ShapeBufferPlatformHelper::initialize();
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}
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};
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static ShapeBufferInitializer _force_early_init;
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void ShapeBufferPlatformHelper::initialize() {
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// Thread-safe initialization using static local mutex
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// This prevents race conditions when multiple threads call initialize() simultaneously
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static std::mutex init_mutex;
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static bool init_done = false;
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// Fast path: if already initialized, return immediately without locking
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if (init_done) {
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return;
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}
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// Slow path: acquire lock and check again
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std::lock_guard<std::mutex> lock(init_mutex);
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if (init_done) {
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return; // Another thread completed initialization while we were waiting
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}
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#if defined(SD_CUDA)
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printf("Initializing CUDA platform\n");
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fflush(stdout);
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// Switch to CUDA implementation
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ShapeBufferCreatorHelper::setCurrentCreator(&CudaShapeBufferCreator::getInstance());
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#else
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printf("Initializing CPU platform\n");
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fflush(stdout);
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ShapeBufferCreatorHelper::setCurrentCreator(&CpuShapeBufferCreator::getInstance());
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#endif
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// Mark as complete - must be last line after all initialization
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init_done = true;
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// Add other platforms as needed (ROCm, OpenCL, etc.)
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}
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} // namespace sd
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